Does CentOS 5 support the ATA TRIM command for use with SSDs? Is the support automatic by default, or would I need to do something specific in order to enable the TRIM feature be used?
View 1 RepliesDoes Suse have any software based TRIM support available or that is in the works?I know there is to a degree new firmware becoming available that supports TRIM (although some are pretty rudimentary) but windows 7 does a fairly good job software side and upgrading the firmware occasionally involves the unbridled joy that is wiping the drive and starting again.
View 1 Replies View RelatedI have a bunch of files (around 900) that have some special characters. Some of the files contains example, and quoting "[useless] filename (something)"so what I want is just to strip the brackets and parenthesis, some are folders, others are text files
View 1 Replies View RelatedWe're planning to install CentOS on a new server that will be based on two Solid-State Disks in a RAID1 configuration. The RAID management will be handled by a hardware Adaptec controller. I've learnt that the TRIM function for SSD drives is supported starting from kernel 2.6.28.
View 1 Replies View RelatedWith the new Intel G2 SSDs coming out, I'm thinking about upgrading my hard drive. However, there seems to be an extra level of software support needed for SSD drives. From what I have read there can be performance degradation over time and other issues. Does anyone know how well SSD drives are supported in Linux and also if there is support for the TRIM command or if it is planned?
View 10 Replies View RelatedI am trying to set up an atom D525 low power PC 64-bit with a 40 GB solid state disk drive. Is it possible to specify ext4 during the install for proper SSD suupport? I read somewhere that after install I can place a -discard line in fstab to enable trim.
Edit: should I have asked this in the x86_64 forum, as I was planning on installing 64 bit?
HDD vs SSD durability
After reading Jeff Atwood's recent blog post on solid state drives, I'm somewhat deterred in wanting to own one. I basically want to use solid state drives in my home network for the following purposes (all machines running 64bit Linux):
My main (pwn3r) desktop computer. This will be my main workstation for work, video encoding, etc. This will be running an Intel 980x 6-core processor, making it a beast. My hard disk configuration will be:
RAID-0: 2 Crucial 128GB Solid State drives for the main operating system(s), essentially providing 256GB of incredibly fast storage.
RAID-1: 2 WD 2TB Hard Disk drives for media and backup storage.
My network firewall computer. This will be running Untangle on my home network for content filtering and firewalling (if that's a word). It will be running an Intel Atom D525 dual core 1.8GHz processor. The hard disk configuration will consist of a single small 16-32GB solid state drive for the operating system and little, if anything, else.
My home HTTP/SFTP/file/backup server. This will be running a dual-core Intel i3 processor; it will be used for some video encoding, as a local DLNA server, a HTTP server for a few largely static files and perhaps some interactive scripts, a SSH server, possibly OpenVPN, and will be used to back up critical files over the network. It will be running RAID-X (where X > 0), meaning RAID-1 or RAID-5 or 6 for fast, redundant data storage, as well as a small SSD for the operating system.
I'm not exactly made of money, and I can't really count on buying four new SSDs every year or so. I can understand replacing them in computer number 1 once a year... maybe, but for the other computers which won't be utilizing the drive very much (ie: they're not power machines), it seems ridiculous to buy new drives this often.
My question is this: can I actually depend on solid state drives like I would on hard disk drives? Also, is this the best economic option? I'd like to save as much power and heat as I can, and solid state drives seem to be the best option at this point.
I have two SSDs on which I have configured md RAID 0, with a 16 KB chunk size. My understanding is that Wheezy (and later) installations are smart enough to align partitions on block boundaries, even in md RAID configurations, but to satisfy my own natural distrust, how do I go about actually confirming that it has done the right thing? I have a single root logical volume within an LVM partition, but neither the logical volume nor the LVM partition occupy all available space, and the LVM partition is offset from the end of the disk.
My concern arises from the fact that, when I look at the sysfs entry for my root partition:
# cat /sys/devices/virtual/block/md126/md126p4/start
804818048
This number is not evenly divisible by 4096.
I would like to make a boot RAID0 LVM on a pair of SSDs (sdc and sdd). The system is already running off of a HDD. I built the RAID0 through the Asus BIOS on the Intel controller. I see:
# cat /proc/mdstat
Personalities : [raid0]
md124 : active raid0 sdc[1] sdd[0]
59346944 blocks super external:/md126/0 32k chunks
md125 : active raid0 sda[1] sdb[0]
222715904 blocks super external:/md127/0 32k chunks
[code]....
My challenge is that when I open Gparted, it only show one disk at a time. I would like to learn how to use Gparted to partition this RAID0 with a UEFI sector and LVM for the rest.
I have been thinking about upgrading my RAID setup from a pair of Intel X25s running the software based RAID included with ubuntu to four Intel X25s running off a PCIe based controller. The controller is an HP P400 which I know works great on ubuntu (I have other machines running it with SAS drives). My desktop has an Intel S5000XVNSATAR mainboard and I have an open PCIe v1.0 8x (physical) slot that is wired 4x. The controller is 8x and will fit fine. How much of a performance hit do you think I will see running this 8x controller in the slot wired 4x with four Intel x25s in a RAID 10? Will I have enough bandwidth with the 4x for those SSD's?
View 4 Replies View RelatedI am currently trying to install Debian Wheezy 7.6 x86_64 on an Intel Server System R2224GZ4GC4, but the Installer doesn’t recognise any of the devices attached to the onboard SATA controller.
Debian Version
Debian Wheezy 7.6 x86_64
Hardware used
Server: Intel Server System R2224GZ4GC4
Motherboard: Intel S2600GZ4
Onboard SATA Controller: Intel Patsburg 4-Port SATA Storage Control Unit (rev 06)
Device on Port 0: Samsung 840 Pro Series SSD
Device on Port 1: Samsung 840 Pro Series SSD
Device on Port 2: Samsung 840 Pro Series SSD
Device on Port 3: Intel 510 Series SSD
While the onboard SATA controller does support so-called “fake RAID,” this ‘feature’ has been disabled (i.e., the BIOS setting “SAS/SATA Capable Controller” is set to “INTEL(R) RSTe”). This is confirmed by the controller during the boot-up URL...Weirdly enough, the Intel 510 Series SSD contains an old system (Debian Squeeze 6.0, Kernel 2.6.35-5-amd64), which can boot and which does recognise all SSDs.
Remedies tried
* I’ve compiled the list of SCSI, SAS and block device related modules that the Squeeze-System, which recognises the SSDs, used and manually loaded these modules during the install process.* I’ve tried to rescan the SCSI bus by:
Code: Select allfor host in /sys/class/scsi_host/*; do echo "- - -" > $host/scan; done* I’ve tried to remove all disks, save for the Intel 510 Serives SSD.* I’ve tried all of the above combined.
I am wondering if Ubuntu support ATA TRIM for SSD out of the box?
View 1 Replies View RelatedI was running it portable on a 4gb usb drive via virtual box which worked great unless I used a computer that had virtualbox on it. The portable version would remove files that the original version needed. I decided to try Qemu. The problem is that the portable version only allows 1gb of space to install regardless the size of a usb drive. so the question is: Is there was a way to trim ubuntu 9.10 down to less than 1gb of disk space? If not is there another portable emulator that could be used instead? the only uses for this are for the use of evolution and opera in a linux environment.
View 3 Replies View RelatedOk, Im likely to buy SSD 128gb drive and install Fedora 14 on it...but I have a question. If I go with ext4 will I get TRIM to work out of the box? Whats the status of kernel support on trim?
View 8 Replies View RelatedI have an OCZ Vertex SSD...the 30GB variety. recently I upgraded my kernel to 2.6.33. I have read that that is all that is needed in order for trim to just start working. Is there a way that I can verify that TRIM is working?I'm debating getting the Vertex2 100GB model because I love my SSD now, but would love to have a little more storage space. I just don't want to buy it without TRIM working.
View 4 Replies View RelatedFor anyone who is not familiar with it, I am talking about the trim functionality in the 2.6.33 kernel for solid state drives.
View 6 Replies View RelatedI followed this tutorial [URL] to enable my TRIM support and now my fstab looks like this:
Quote:
# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
[Code].....
but when I follow the second half of the tutorial http://lightrush.ndoytchev.com/rando...bledandworking to check and make sure it's working I don't get all zeros like I'm supposed. I tried waiting a while like I saw in another tutorial as well and check it again.. Still random numbers and no zeros.
First system specs. Gateway Solo Pro 9300, 433Mhz, 288megs. OS Slackware 13.1 32-bit and KDE.
As I get more comfortable with Linux I find that I am doing more waiting for the computer to catch up.
Would it be better to trim down KDE or change to a lighter GUI? If I change to a lighter GUI will I have to reinstall things I have installed under KDE?
I just bought a Samsung 850 Pro 250GB SSD drive and have since then found out that Linux has/had a faulty implementation of queued trim (which is a synonym for NCQ I think). I'm using kernel 4.1.0 (the default selected by the Debian 8.1 installer) and I've read that Samsung drives are blacklisted for queued trim by the recent kernels. However, the output of dmesg contains the following lines, with and without TRIM enabled for the drive (i.e. with or without the "discard" option in fstab for the drive):
Code: Select all[ 1.012287] ata6.00: 1953525168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[ 1.013438] ata5.00: failed to get NCQ Send/Recv Log Emask 0x1
[ 1.013440] ata5.00: 488397168 sectors, multi 1: LBA48 NCQ (depth 31/32), AA
[ 1.015037] ata5.00: failed to get NCQ Send/Recv Log Emask 0x1
Since the depth is not 1 but rather 31, it looks like NCQ is enabled. I've disabled TRIM on the drive for now, and whether it's safe to enable TRIM or not.
There are not SSDs with TRIM support available in my region that fit into my laptop (1.8", IDE, ZIF). I'm running Ubuntu 10.10.
Most articles (or questions on superuser) I've come across concering TRIM (or the lack thereof) date back to 2009, when not many SSDs with TRIM support were available and OS support was still very fresh.
I'm interested in the current situation, but I couldn't find too much information about it.
What are currently the "best practices" for using an SSD without TRIM under Linux?
I've read about the wiper script included with hdparm. Do I understand correctly that I could use this to free unused blocks, e.g. by running it once a month?
Some sources state that HFS+ (the default-filesystem of Mac OS X) doesn't suffer as badly from lack of TRIM as other filesystems. How about linux filesystems? Are there filesystems that are better suited for SSDs without TRIM than others?
My partition /dev/sda3 on an SSD drive doesn't contain any filesystem, but it contains garbage. How do I do a TRIM/DISCARD operation on the whole partition?
View 2 Replies View RelatedThe situation with TRIM in Ubuntu has me utterly confused. I don't know whether I need to manually run it or not. Sources I've found are disparate and unclear. I have Ubuntu 10.04 with latest updates (including kernel 2.6.32-26). I have an Intel X-25M drive with latest firmware, and it is formatted as ext4. So, does TRIM support run automatically? If not, how do I check if I need to run it, and then how do I run it if necessary?
View 1 Replies View RelatedIn windows the only controllers that really work with TRIM is the onboard Intel ones, Jmicron, Marvell, Nvidia and AMD's don't pass the command to the drives if you use their own drivers. (And from what Ive read, the Micron sata6 controllers don't work with TRIM even using the default Microsoft drivers). In Linux do more then just Intel drives work with TRIM? I have a Nvidia 790i Ultra motherboard, the SATA controller is an Nvidia one which has 2 settings, ATA and Raid (if the drives aren't added to an array it runs them in AHCI) and has an additional Jmicron sata port.
If I enabled TRIM in the OS, would it work on either of those controllers? Also if anyone knows this, in Windows if you set an Intel controller to raid, you wont get TRIM on SSD's that are on the controller (but not in an array) with the default Microsoft driver like you would if it was set to AHCI, you only get it with the Intel RST drivers. Would a SSD on an Intel controller set to raid but not in an array get the TRIM command passed to it in Ubuntu?
does Debian Lenny 5.0.4 stable supports SSD TRIM? If not, what package i need to add if i buy a new SSD and dont want to loose Hard Disk Performance over time?
View 14 Replies View RelatedI'm moving over to Linux when the new SSD arrives. SSD gives increased performance, so I thought that I could encrypt everything.
But then I came to think about TRIM, and garbage collection on the drive. Will a LUKS encrypted drive affect the garbage collection system? (TRIM).
I tried to trim a video in FFmpeg using this command:
Code:
ffmpeg -ss 00:20:48.500 -t 00:01:00 -i INPUT.mp4 -acodec copy -vcodec copy OUTPUT.mp4
But FFmpeg is not accurate and it started the video from a nearby point instead (from 00:24:46~). I tried to add 2 seconds to my starting point and it took another frame (not what I wanted).
The video source is H264 video with AAC audio.
I wrote this script which works but it should run automatically about once per week. I hunted and experimented with KDE Task Scheduler (no dice and no help anywhere) and cron (confusing instructions and cannot edit crontab -e with vim, and cannot enter cron folders/files). I would settle for a desktop shortcut to run the script but found no for that.
Script:
Code:
#!/bin/bash
xterm -hold -e fstrim -v /
Machine:
OS: openSUSE 11.4 x86_64
[code].....
I'm looking for a way to launch "TRIM" commands to a SSD drive myself, from a c++ code I'm going to write, for flash erasing an SSD drive (and not to wait for others things that "should do it automatically in some circumstances if this or this, this and this have been enabled and [..]" but will never tell me if it worked or not
I know there is thousands of complicated ways to test and check if it worked, and also software that needs money to do so, that's why I just want to call myself the TRIM functions and read the return value (like true or false) in order to know if it worked !
Where I can find the c++ call that could permit me to do so ? I heard about the GLibC that gives a way to access every user space function related to Linux Kernel (poll, select and others) as standard c++ functions, I suppose that, if there is a way, it will be on the GLibC but how to find it ?
I have root on sda1 and home on sdb1.
I am getting close to full and wanted to analyze what apps or files are taking up the most room.
How do I navigate to sda1 in Disk Usage Analyzer?
"/" says 100% 121.5GB in dua (see attached screenshot)
Code:
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 3.7G 3.2G 317M 92% /
none 493M 340K 493M 1% /dev
[Code]....
I have installed Centos in my server and when I take, top -c command its not showing the "command" option correctly. Due to the same, I'm not able to correctly track down the file which causes excessive usage. For eg:
top - 09:30:29 up 72 days, 12:46, 2 users, load average: 0.21, 0.16, 0.15
Tasks: 122 total, 1 running, 120 sleeping, 0 stopped, 1 zombie
Cpu(s): 4.8%us, 0.7%sy, 0.0%ni, 93.5%id, 1.0%wa, 0.0%hi, 0.0%si, 0.0%st
[code]....